Examine source code of Big Shorts Player

{
  "manifest_version": 2,
  "name": "Big Shorts Player",
  "description": "Redirects YouTube Shorts to the standard (big) player",
  "version": "0.0.2.1",
  "browser_specific_settings": {
    "gecko": {
      "id": "BigShortsPlayer@AngelWyvern.github.io"
    }
  },
  "icons": {
    "48": "icon@48px.png",
    "96": "icon@96px.png"
  },
  "permissions": [
    "webRequest",
    "webRequestBlocking",
    "webNavigation",
    "tabs",
    "*://*.youtube.com/shorts/*"
  ],
  "background": {
    "scripts": [
      "active.js"
    ]
  }
}